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106. coneosnmwsf' COAllNG UR PLASTIC Examiner mixed with three parts ofUNITED STATES PATENT OFFICE.

I WILLIAM P. BOSE, OF IRWIN, COLORADO.

ARTIFICIAL STONE.

SPECIFICATION forming part of Letters Patent No. 279,817, datedApplication filed April 5, 1883. (No specimens.)

To all whom it may concern:

Be it known that I, \VIL'LIAM P. ROsE, of Irwin, in the county ofGunnison and State of Colorado, have invented certain new and usefulImprovements in Artificial Stone; and I do hereby declare that thefollowing is a full, clear, and exact description thereof.

y tionof artificial stone for buildings and other purposes; and itconsists in the combination of ingredients, substantially as will behereinafter set forth.

To enable others skilled in the art to avail themselves of the benefitsof my invention, I will proceed to describe how I carry the same intoefi'ect.

I first prepare a solution consisting of the following ingredients, inor about the proportions set forth, to wit: five (5) pounds of borax,

two (2) pounds of litharge, five (5) pounds of magnesia, one (1) pounone-ash and ten (1 poun s rice. To the above 18 added a sufficientquantity of water and boiled until the whole comes (well incorporated)to the consistency of paste. I then strain the compound and add onehundred (100) gallons of waterto each gallon of the above solution,which one part of Portland or any other suitable cement is thoroughlyarp silicious SHIN. or and the same is then suifioiently dampened withthe solution above described to form aplastic material, which is nowplaced in molds of any desired design or size, and as invention has forits object the produc- June 19, 1883.

soon aswell set the material is removed therer' 35 from and left to dryfrom four to five hours, more or less, after which the artificial stonethus made is treated with a solution of two (2) pounds of zinc-white andten (10) pounds of water-glass mixed with about one hundred (10W water.In about three days the stone is ready for use. marble I proceed in thesame way, withthe exception that the litharge, seed-lac, borax, andmagnesia are omitted. For coloring I use black oxide of man anese or anyother suita- Ble matter. Ih'iere is obviously many purposes to which mycomposition, when molded, may be advantageously appliedsuch, forinstance, as paving, roofing, and troughs or receptacles for'water, &c.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

In the manufacture of artificial stone or marble, a solution with whichto moisten the material forming the base of said stone, composed ofseed-lac, litharge, magnesia, boneash, rice, and water, said ingredientsbeing mixed and compounded in about the proportion specified, and forthe purpose set forth.

Intest'mony that I claim the foregoing as my own I a xsny signature inpresence of two witnesses. v

WM. P. \Vitnesses:

W. R. Knvwonrn, F. O. MoOLn \RY.

In the manufacture of

